---
product_id: 287166086
title: "MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue"
brand: "therm-a-rest"
price: "$1381.11"
currency: USD
in_stock: true
url: https://www.desertcart.ec/products/287166086-mondoking-3d-self-inflating-camping-sleeping-pad-large-77-x
store_origin: EC
region: Ecuador
---

# Compact 26x10.3" storage 7.0 R-value insulation 4.25" thick comfort MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue

**Brand:** therm-a-rest
**Price:** $1381.11
**Availability:** ✅ In Stock

## Summary

> 🏕️ Sleep Like a King, Anywhere You Roam!

## Quick Answers

- **What is this?** MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue by therm-a-rest
- **How much does it cost?** $1381.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/287166086-mondoking-3d-self-inflating-camping-sleeping-pad-large-77-x)

## Best For

- therm-a-rest enthusiasts

## Why This Product

- Trusted therm-a-rest brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Setup:** TwinLock valve system for quick inflation and deflation.
- • **Camp Like Royalty:** Experience ultra-comfort with 4.25 inches of plush thickness.
- • **Portable Convenience:** Easily packs down to 26x10.3 inches for on-the-go adventures.
- • **Extreme Weather Ready:** Stay warm with a 7.0 R-value, perfect for any adventure.
- • **Maximized Sleep Surface:** 3D construction ensures you have all the space you need.

## Overview

The Thermarest Mondoking 3D Large Sleep Mat is a premium sleeping pad designed for outdoor enthusiasts who demand comfort and convenience. With a thickness of 4.25 inches and a 7.0 R-value, it provides exceptional insulation and support. The innovative TwinLock valve system allows for quick inflation and deflation, while its compact design makes it easy to transport. Measuring 77x25 inches when inflated, this pad is perfect for camping in any conditions, ensuring you wake up refreshed and ready for adventure.

## Description

MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue

## Features

- Camp like royalty with the MondoKing 3D, an ultra-comfy 4.25-inch thick sleeping pad with a stretch knit fabric layer for resting better under the stars
- Utilizing two one-way valves, one for inflation and one for deflation, the TwinLock valve system makes setting up and breaking camp a breeze
- 7.0 R-value insulates in the most extreme conditions using StrataCore construction that utilizes a continuous layer of thermal foam nestled between alternating ridges of air and foam
- 3D construction creates vertical sidewalls to maximize useable sleep surface and comfort
- StrataCore construction allows the pad to easily compress and pack away to a compact 26x10.3 inches in included storage sack
- For best performance, inflate your self-inflating pad with air by breath or included pump sack and leave the mattress fully inflated for 2-4 hours before your first use.
- Large size measures 77x25x4.25 inches, 26x10.3 inches rolled, and weighs 4.38 pounds; stuff sack/pump sack included; limited lifetime warranty; made in the USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Color | Lyons Blue |
| Size | Large - 77 x 25 Inches |
| Style | Original Storage Bag |
| Construction | Closed Cell |
| Material Composition | - Oberseite: 50D Stretch-Strick-Polyester - Unterseite: 75D Polyester |
| Height | 8 inches |
| Length | 32 inches |
| Weight | 4.5 Pounds |
| Width | 11 inches |
| Material Type | Polyester |
| Number of Items | 1 |
| Features | Portable, Quick Deflation, Quick Inflation |
| Usage | Sleeping Pad |
| Sport | Sporting Goods |
| Included Components | Sleeping Pad, Pump Sack, Storage Sack |
| Batteries Included? | No |
| Brand | Therm-a-Rest |
| maximum weight capacity | 1440 Pounds |
| Department | Unisex-Adult |
| Manufacturer | Cascade Designs Inc. |
| Item model number | 040818132258 |
| Product Dimensions | 195.58 x 63.5 x 10.16 cm; 1.99 kg |
| ASIN | B07YFXYF9W |

## Product Details

- **Size:** Large - 77 x 25 Inches
- **Special features:** Portable, Quick Deflation, Quick Inflation
- **Brand:** Therm-a-Rest
- **Colour:** Lyons Blue
- **Product dimensions:** 195.6L x 63.5W x 10.2Th centimeters

## Images

![MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue - Image 1](https://m.media-amazon.com/images/I/61OfvMF8y-L.jpg)
![MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue - Image 2](https://m.media-amazon.com/images/I/71-QUF+HDZL.jpg)
![MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue - Image 3](https://m.media-amazon.com/images/I/51CnmlFogPL.jpg)
![MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue - Image 4](https://m.media-amazon.com/images/I/61fsByiI6wL.jpg)
![MondoKing 3D Self-Inflating Camping Sleeping Pad, Large - 77 x 25 Inches, Lyons Blue - Image 5](https://m.media-amazon.com/images/I/71GqEjXhZmL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: How is this temperature in summer?**
A: The R rating is regarding insulation. The Therm,-a-rest doesn't actually provide heat, just protection from the cold. I used mine on a 3,000 mile motorcycle trip last summer and felt extremely comfortable every night (although I did buy a cooler sleeping bag for the hotter states).

**Q: What size dry bag would you use for size L?**
A: Look at the dimensions listed on the sites information also not sure if you need a dry bag this is waterproof

**Q: The sleeping bench in my travel trailer is 75" long and 27" wide. Do you think this could fit lengthwise?**
A: Hi Terry - No, the Large Therm-A-Rest MondoKing 3D would not fit as it's 77" long when inflated. The mattress is 4" thick, so if it's constrained by the length of the space it will be in, it will either want to roll up at either end or buckle in the middle somewhere, and that could be uncomfortable.  The Therm-A-Rest Customer Support Team

**Q: Why does the bag it comes with have a valve?**
A: The bag is a pump sack/stuff sack combo. The valve on the bag is to connect to the stuff sack to help w/inflation. 
Thermarest Customer Service.

## Frequently Bought Together

- Therm-a-Rest MondoKing 3D Self-Inflating Camping Sleeping Pad
- Therm-a-Rest NeoAir Micro Electric Air Pump for Sleeping Pads ,Black
- Therm-a-Rest Synergy Luxe Mattress Sheet

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-08*